func (c *Client) LatestRelease(releasePath string) (director.Artifact, error) {
var artifact director.Artifact
var responseData []struct {
Version string
URL string
}
url := "/api/v1/releases/" + releasePath
err := c.JSONClient.Get(url, &responseData)
if err != nil {
return artifact, err
}
if len(responseData) == 0 {
return artifact, fmt.Errorf("empty result for %s", url)
}
artifact.URL = responseData[0].URL
htmlURL := fmt.Sprintf("/releases/%s?version=%s", releasePath, responseData[0].Version)
respBytes, err := c.HTTPClient.Get(htmlURL)
if err != nil {
return artifact, err
}
const sha1Pattern = `\w*sha1\: ([a-f0-9]{40})`
regex := regexp.MustCompile(sha1Pattern)
matches := regex.FindSubmatch(respBytes)
if len(matches) != 2 {
return artifact, fmt.Errorf(
"failed while scraping %s: unable to find sha1", htmlURL)
}
artifact.SHA = string(matches[1])
return artifact, nil
}
func (c *Client) LatestStemcell(stemcellName string) (director.Artifact, error) {
var artifact director.Artifact
var responseData []struct {
Light struct {
URL string
}
}
url := "/api/v1/stemcells/" + stemcellName
err := c.JSONClient.Get(url, &responseData)
if err != nil {
return artifact, err
}
if len(responseData) == 0 {
return artifact, fmt.Errorf("empty result for %s", url)
}
artifact.URL = responseData[0].Light.URL
stemcellBytes, err := c.HTTPClient.Get(artifact.URL)
if err != nil {
return artifact, fmt.Errorf("error while downloading stemcell: %s", err)
}
sha1Bytes := sha1.Sum(stemcellBytes)
artifact.SHA = hex.EncodeToString(sha1Bytes[:])
return artifact, nil
}